PE-22-28: Complete Research Guide for Laboratory Use

PE-22-28 is a synthetic 7-amino-acid peptide derived from the spadin sequence. It is studied as a TREK-1 potassium-channel blocker in neurological research models. For research teams sourcing PE-22-28, the most important variables are sequence fidelity, residual solvents, endotoxin load, and traceable batch documentation. Every vial of PE-22-28 supplied by Quality Peptide USA is American-synthesized, lot-controlled, and released only after independent HPLC-MS and LAL verification.

PE-22-28 is referenced across TREK-1 channel pharmacology, Neuronal excitability research, Spadin-pathway studies and adjacent investigative domains. As triple-receptor and dual-agonist research peptides expand the pharmacological toolbox, PE-22-28 continues to serve as a reference compound in comparative assays. Investigators routinely pair it with companion peptides from the Glow stack, Wolverine stack, or GHRH/GHRP secretagogue blends depending on study design.

Reconstitute PE-22-28 under sterile technique with bacteriostatic water (0.9% benzyl alcohol). Lyophilized vials remain stable refrigerated at 2–8°C; reconstituted aliquots should follow the storage window listed on the product page. Avoid freeze/thaw cycling, exposure to UV light, or contact with reactive metals. For prolonged storage, single-use aliquots in low-binding tubes at −20°C preserve sequence integrity.

Every batch of PE-22-28 passes RP-HPLC (≥ 99% purity threshold), ESI mass spectrometry confirmation, Karl Fischer water content, and a Limulus Amebocyte Lysate endotoxin screen below 0.10 EU/mg. Certificates of analysis are published with every order — no email request required.

American-synthesized research peptides eliminate the customs delays, opaque batch chains, and inconsistent cold-chain handling associated with overseas suppliers. Quality Peptide USA synthesizes, lyophilizes, and ships PE-22-28 from domestic facilities, with cold-pack dispatch on every order placed before the 2 PM EST cut-off.